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Finding the Fourth Proportional to 279,568.40, 419,352.60 and 92,579.90

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Solution

The fourth proportional to 279,568.40, 419,352.60 and 92,579.90 is: 138,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,568.40 : 419,352.60 = 92,579.90 : x
  2. Step 2: Convert to fraction form
    279,568.40/419,352.60 = 92,579.90/x
  3. Step 3: Cross multiply
    279,568.40x = 419,352.60 × 92,579.90
  4. Step 4: Simplify right side
    279,568.40x = 38,823,621,772.74
  5. Step 5: Solve for x
    x = 38,823,621,772.74/279,568.40
  6. Step 6: Final answer
    x = 138,869.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.